. >> osgood: don cornelius presided over a weekly dance party dedicated as you put it to peace, love and soul. although donna summer learned to sing in church, she rose to fame as the queen of disco with a sound more in tune to saturday night than sunday morning. ♪ looking for some hot stuff, baby, this evening ♪ ♪ i need some hot stuff, baby, tonight ♪ >> osgood: long before there was sex in the city, helen gurley brown and sex and the single girl revealing that even good girls enjoyed being bad. >> mmmm. that sounds just yummy. >> osgood: she then took the reins at cosmopolitan finding success with covers, promising success under the covers. >> men and women can't be friends. the sex part always gets in the way. >> reporter: author screen writer and director norah ephron found success outlining how sex with ruin relationships and vice verse a. >> you're saying that a man can be a woman with a woman he finds unattractive. snairlings sex, money, power, that's the sort of stuff j.r.ewing knew best. >> what is that show without j.r.? >> that's what i figure. osgood: there was n